<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0035-001X</journal-id>
<journal-title><![CDATA[Revista mexicana de física]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fis.]]></abbrev-journal-title>
<issn>0035-001X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0035-001X2011000700008</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Analysis and correction of track overlapping on nuclear track detectors (SSNTD)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Palacios]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sajo-Bohus]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barros]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fusella]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Avila]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Simón Bolívar  ]]></institution>
<addr-line><![CDATA[Caracas ]]></addr-line>
<country>Venezuela</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Instituto de Estudios Avanzados (IDEA)  ]]></institution>
<addr-line><![CDATA[Caracas ]]></addr-line>
<country>Venezuela</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2011</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2011</year>
</pub-date>
<volume>57</volume>
<fpage>34</fpage>
<lpage>39</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2011000700008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2011000700008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2011000700008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[The problem of nuclear track overlapping is addressed assuming the stochastic character of charged particle registry and the fact that even monoenergetic beam perpendicularly impacting on detector surface will show a distribution for track radius values. Asymmetric distributions of overlapping tracks were obtained for very low or very high simulated track quantities, while for intermediate values the distributions were well described by Gaussians. A model for the track overlapping process was developed, considering the dependence of the quantity of non overlapping tracks on the number of simulated tracks by a second order homogeneous differential lineal equation. Its solution contains only one free parameter that is related to track geometry and field view área. By successive approximations, the number of total induced tracks (which is proportional to particle fluence) is determined from the knowledge of the amount of non overlapping tracks, dimensions of the field view and average track radius.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[El problema del solapamiento de trazas nucleares se analiza teniendo en cuenta el carácter estocástico del registro de partículas cargadas y el hecho de que incluso un haz monoenergético, incidiendo perpendicularmente sobre la superficie del detector, mostrará una distribución en los valores del radio de las trazas. Para muy bajas o muy altas cantidades de trazas simuladas se obtuvieron distribuciones asimétricas de trazas no solapadas, mientras que para valores intermedios las distribuciones fueron bien descritas por Gaussianas. Se desarrollo un modelo para describir el proceso de solapamiento de trazas, considerando que la dependencia de trazas no solapadas con el número de trazas simuladas se describe por una ecuación diferencial lineal y homogénea de segundo orden. Su solución contiene sólo un parámetro libre que esté relacionado con la geometría de pista y campo área de visualización. El número total de trazas inducidas (que es proporcional a la fluencia de partículas) se determina por aproximaciones sucesivas a partir del conocimiento de la cantidad de trazas no solapadas, dimensiones del campo de visión y radio medio de las trazas.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Track overlapping]]></kwd>
<kwd lng="en"><![CDATA[nuclear track detector]]></kwd>
<kwd lng="en"><![CDATA[Monte Carlo simulation]]></kwd>
<kwd lng="es"><![CDATA[Solapamiento de trazas]]></kwd>
<kwd lng="es"><![CDATA[detector de trazas nucleares]]></kwd>
<kwd lng="es"><![CDATA[simulación de Monte Carlo]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="center"><font face="verdana" size="4"><b>Analysis and correction of track overlapping on nuclear track detectors (SSNTD)</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>D. Palacios<sup>a</sup>, L. Sajo&#150;Bohus<sup>a</sup>, H. Barros<sup>a</sup>, E. Fusella<sup>b</sup>, and Y. Avila<sup>a</sup></b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><sup>a</sup> <i>Universidad Sim&oacute;n Bol&iacute;var, P.O. 89000, Caracas, Venezuela.</i></font></p>     <p align="justify"><font face="verdana" size="2"><sup>b</sup> <i>Instituto de Estudios Avanzados (IDEA), Caracas, Venezuela.</i></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">Recibido el 10 de marzo de 2010    <br> Aceptado el 31 de agosto de 2010</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>     <p align="justify"><font face="verdana" size="2">The problem of nuclear track overlapping is addressed assuming the stochastic character of charged particle registry and the fact that even monoenergetic beam perpendicularly impacting on detector surface will show a distribution for track radius values. Asymmetric distributions of overlapping tracks were obtained for very low or very high simulated track quantities, while for intermediate values the distributions were well described by Gaussians. A model for the track overlapping process was developed, considering the dependence of the quantity of non overlapping tracks on the number of simulated tracks by a second order homogeneous differential lineal equation. Its solution contains only one free parameter that is related to track geometry and field view &aacute;rea. By successive approximations, the number of total induced tracks (which is proportional to particle fluence) is determined from the knowledge of the amount of non overlapping tracks, dimensions of the field view and average track radius.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Keywords: </b>Track overlapping; nuclear track detector; Monte Carlo simulation.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>     <p align="justify"><font face="verdana" size="2">El problema del solapamiento de trazas nucleares se analiza teniendo en cuenta el car&aacute;cter estoc&aacute;stico del registro de part&iacute;culas cargadas y el hecho de que incluso un haz monoenerg&eacute;tico, incidiendo perpendicularmente sobre la superficie del detector, mostrar&aacute; una distribuci&oacute;n en los valores del radio de las trazas. Para muy bajas o muy altas cantidades de trazas simuladas se obtuvieron distribuciones asim&eacute;tricas de trazas no solapadas, mientras que para valores intermedios las distribuciones fueron bien descritas por Gaussianas. Se desarrollo un modelo para describir el proceso de solapamiento de trazas, considerando que la dependencia de trazas no solapadas con el n&uacute;mero de trazas simuladas se describe por una ecuaci&oacute;n diferencial lineal y homog&eacute;nea de segundo orden. Su soluci&oacute;n contiene s&oacute;lo un par&aacute;metro libre que est&eacute; relacionado con la geometr&iacute;a de pista y campo &aacute;rea de visualizaci&oacute;n. El n&uacute;mero total de trazas inducidas (que es proporcional a la fluencia de part&iacute;culas) se determina por aproximaciones sucesivas a partir del conocimiento de la cantidad de trazas no solapadas, dimensiones del campo de visi&oacute;n y radio medio de las trazas.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Descriptores: </b>Solapamiento de trazas; detector de trazas nucleares; simulaci&oacute;n de Monte Carlo.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">PACS: 29.40.Wk; 29.85.Fj; 02.60.Ed</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"> <a href="/pdf/rmf/v57s1/v57s1a8.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a>  </font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>References</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">1. J. Palfalvi, L. Sajo&#150;Bohus, and I. Eordogh, <i>Rad. Meas. </i><b>31</b> (1999) 157.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8374811&pid=S0035-001X201100070000800001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">2. T. Yamauchi, <i>Rad. 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<surname><![CDATA[Roussetski]]></surname>
<given-names><![CDATA[A.S]]></given-names>
</name>
</person-group>
<source><![CDATA[]]></source>
<year></year>
<conf-name><![CDATA[8th International Conference on ColdFusion]]></conf-name>
<conf-date>2000</conf-date>
<conf-loc>La Spezia </conf-loc>
</nlm-citation>
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<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zaki]]></surname>
<given-names><![CDATA[M.F]]></given-names>
</name>
<name>
<surname><![CDATA[El-Shaer]]></surname>
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</person-group>
<source><![CDATA[PRAMANA - Journal of Physics]]></source>
<year>2007</year>
<volume>69</volume>
<page-range>567</page-range></nlm-citation>
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</back>
</article>
